As far as "Traditional Banks".... 

The sandwich lease option is an excellent way to invest in real estate while helping the seller sell and helping someone who does not qualify for traditional financing get into a home of their own.I believe this is the best investment technique in the real estate market today, as an investor I want to avoid risk and liability.

The financial industry, at least the traditional large financial industry, wants to see a lot of data and be able to ascertain with reasonable certainty your long term delinquent rent rates, eviction rates, fees, rent increases, operating costs, and your (or your company's) personal financial picture and stability.

It is basically a traditional IRA which also has an allowance to pull for medical bills without the early withdrawal penalty of 10%.I am lucky in that my wife gets full medical benefits for our family from here employer so this is not an issue for me.

The other part is this type of program requires you to use a LOC instead of a traditional mortgage.

A HML is probably more likely to allow you to borrow the down payment from a family member than a traditional bank.

The main reason is that those places can be legally financed by traditional residential means, not commercial loans.

the problem was that in Denver duplexes are way too expensive to make a traditional house hack a good idea. 

Traditional vs hard money.

One company owns everything and does nothing (this is your SLLC a/k/a “asset holding company”) and a completely separate company handles all of your operations (this is a traditional LLC a/k/a “operating company”) For the operating company which serves as your face to the world and through which you do all your business, you establish a Traditional LLC to carry out the operations of your investments.